Important notice! Pokemon Mega-Charizard-Y is a fictional character of humans.There is only single Creator of everything and anythingAll Pokemon are made up by humans based on real animals or existing objects.The stroies of Pokemon are all fictional and in most cases illogical or nonsense.Games are for only fun time and do never put any spiritual/religional or deity meaning into them!Never pass your necessary jobs and duties due to gameplaying!

Official Pokemon Info from Bulbapedia (Content is available under Attribution-NonCommercial-ShareAlike 2.5)

Biology

Mega Charizard X and Mega Charizard Y.

Charizard is a draconic, bipedal Pokémon. It is primarily orange with a cream underside from the chest to the tip of its tail, which burns with a sizable flame. Charizard has a long neck, small blue eyes, raised nostrils, and two blunt horns protruding from the back of its rectangular head. There are two fangs visible in the upper jaw when its mouth is closed. Two large wings with teal undersides sprout from its back, and a horn-like appendage juts out from the third joint of each wing. Charizard's arms are short and skinny compared to its robust belly, and each limb has three white claws. It has stocky legs and cream-colored soles under its feet.

As Mega Charizard X, its body and legs appear more physically fit, though its arms remain thin. Its skin turns black with a sky blue underside extending from the lower jaw to the tip of the tail. Two spikes with blue tips curve upward from the front and back of each shoulder, while the tips of its horns sharpen, turn blue, and curve slightly upward. Its brow and claws are larger, its snout is shorter, and its eyes are now red with white pupils. It has two small, fin-like spikes under each horn and two more down its lower neck. The lower trims of its wings are divided into large, rounded points and each third joint is adorned with a claw-like spike. Mega Charizard X breathes blue flames out the sides of its mouth, and the flame on its tail now burns blue with increased heat.[1]

When Mega Evolved as Mega Charizard Y, this Pokémon becomes more sleek and expansive in appearance, but retains its normal coloration. However, it now has white pupils. It has three pointed horns on the back of its head, the middle of which is longer. Its shorter snout has larger fangs and a ridge on the nose. Its neck is shorter and its hands are much smaller, but its torso and legs are longer. Small wings develop on its wrists, while the ones on its back become larger and now have ragged edges. The back of its tail has a large thorn at the base and three smaller ones near the tip, which now burns with a longer flame. Mega Charizard Y is said to have incredible flying prowess, being able to reach incredible heights.[1]

This Pokémon flies in search of powerful opponents to battle, and its fire will burn hotter as it gains experience. Its fiery breath is capable of melting boulders, massive glaciers, and has been known to accidentally cause forest fires. In the past, Blast Burn was its signature move. Charizard typically inhabit mountains and valleys. The anime has shown that only a weak Charizard would show off its power, and that a group of Charizard resides in the Charicific Valley in Johto.

Trevor has a Charizard that he received as a Charmander from Professor Sycamore. It was shown in A League of His Own! to be able to Mega Evolve into Mega Charizard Y. This was the only time Charizard's Y Mega Evolution has appeared in the anime.

Red obtained Charizard as a Charmander from Professor Oak when he went out on his journey. It evolved into a Charizard some time after Red defeated Koga between File 2 - Cubone and File 3 - Giovanni. During the fight against Mewtwo in File 4 - Charizard, Red's Charizard Mega Evolved into Mega Charizard X and battled Mewtwo. It was the first Mega Evolution seen in the anime.

One of Blue's main Pokémon, Charizard, debuted as a Charmander. With his increased capacity for battle both with augmented strength and his flight ability, he proved to be a valuable asset for Blue, both during the Silph Co. battles and in the Pokémon League, where Red's Venusaur narrowly defeated him. He had evolved from Charmeleon sometime before Kalling Kadabra. In the X & Y chapter, he has obtained a Charizardite Y, with it he can Mega Evolve into Mega Charizard Y.

A Charizard was fantasied along with the other fully evolved Kanto Starters in Chinchou in Charge, where the Pokémon Association Chairman of Kanto and Johto explains to Bill and Janine the special privilege of entering the finals unconditionally after collecting the badges.

X's Charmeleon, Salamè, evolved into a Charizard during a battle against Xerosic's Pokémon in the X & Y chapter. He has a Charizardite X hidden in the flame on the tip of his tail, with it he can Mega Evolve into Mega Charizard X.

Green, the main rival of Red in the Pokémon Pocket Monsters manga series, owns a Charizard. It is the final evolved form of Charmander, his starter Pokémon. It is a mischievous Pokémon that has a rivalry with Red's Clefairy. As a Charmander, it was able to evolve directly into Charizard, apparently skipping the Charmeleon stage. It has reverted to the Charmander stage, although it has since evolved back into Charizard permanently.

In the TCG

Charizard's first-released TCG card, which as part of the Base Set, was widely regarded at the height of popularity of Pokémon as the best card ever. This was because of its powerful attack, Fire Spin, and useful Pokémon Power, Energy Burn, which allowed it to convert any Energy attached to it to Fire Energy. Fire Spin needed four Fire Energy and could deal 100 damage, knocking out the majority of Pokémon cards. In addition, it had the highest HP then, at 120. Individual Charizard cards were sold up to as much as $150. First edition cards of this dwarfed this price at one point breaking the $1000 US price point. This Charizard card was reprinted in Wizards of the Coast's Base Set 2 and Legendary Collection sets, and released again with updated artwork in the Stormfront expansion.

In the TFG

Other appearances

Charizard is a Power-type playable character in Pokkén. Moves it can use include Flamethrower, Fire Punch, Flare Blitz, and Seismic Toss. Upon entering Synergy Burst, it Mega-Evolves into Mega Charizard X and can use the Burst Attack Searing Blaze.

Charizard holds the distinction of being the first Pokémon to appear in the Japanese version of the Pokémon anime, as it is the first one to appear in the opening. However, outside of Japan, this honor belongs to Mewtwo.